I am a great believer in masonry paint, and this weathershield by Dulux is one of the best. It covers very well, goes on easily, and lasts may years. It is a few years since I bought this, so I have no idea of the cost.
Weathershield is a water based paint, produced for brick and cement surfaces, it is available in smooth, and textured finishes. The smooth range gives you a choice of fourteen colours, and the textured just seven. In both cases, it is recommended that you apply two coats. The drying time is officially two to four hours, but of course it depends on the surface and the weather. One litre will cover up to seven square meters, and the paint can be applied with a brush, or a roller. Cleaning of brushes etc. is a doddle because it is water based.
All surfaces to be painted, need to be sound, clean, and of course dry. It goes without saying that flaking paint should be removed, algae or moss needs to be dealt with, and all cracks etc should be filled before applying this paint. If your surface is still powdery after thorough preparation, seal it with Weathershield Stabilising Primer.
The paint needs to be thoroughly stirred before use (You have no idea how long it has been on the shelf). Apply with a roller or well loaded brush, the biggest you can comfortably manage. I prefer to do cutting in first, but this can be done later. You may find you can get away with one coat, but in most cases two coats are better than one.
Dulux say this paint should last for up to fifteen years, This depends on the weather conditions, the state of the masonry you are painting, and the quality of the job. I often smile as I pass a house I painted once, it looks very good, and the walls have not been touched since I did them nearly thirty years ago!
This paint is made by ICI at Slough, and is designed for outdoor use. Just a quick mention of Health & Safety, this weathershield contains a Fungicide, so do not allow kids to help you paint it, and please don't dispose of in watercourses. If splashes get into the eyes, simply rinse with clean water, there should be no lasting effects.
I give this the Caretaker seal of approval. I have a lot of experience of this, and yes, I have even been to the factory!